Snowstar

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet." 
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
***
Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
**************
Author's current works: War Online, My Soul Card is a Reaper
Author's other notable works:  The Last Slytherin, The Sharingan Hyuga
**************
You can also support the Author through Patreon or buy coffee on Ko-fi.com

https://www.patreon.com/snowstar

https://ko-fi.com/snowstar5061

Weapon seller in the world of magic

Somewhere in the northern hemisphere of the planet, a giant portal was seen floating above the lake that spread about a few square kilometers around.

Floating islands were seen here and there on the lake, and on the top of them, pairs of fire giants were either seen sleeping or fighting against each other.

On the shores, a couple of fire giants were lazily lying around and gossiping about various things.

Ignis: "Say, I heard that Tharnir was stabbed by Ravnak in sleep."

Draknir: "Yeah, I too heard about it. Wasn't that too cowardly? How was Tharnir not punished?"

Ignis: "C'mon, Tharnis had a special background. He was the grandnephew of General Morvak. There would be no way he could get punished."

Draknir: "Morvak was just a squad captain three years ago but after killing a bunch of weakened ice elves and luckily killing a general, his status has been upgraded."

Null Point: The hidden dimension of portals